Evaluation of the TEC prediction performance of NeQuick2 model

Abstract

This paper examines the performance of the NeQuick2 model, an empirical three-dimensional ionospheric electron density model, in terms of TEC prediction. The investigation was carried out for three months period in 2022 (January-March), which includes geomagnetic active, solar active, and calm days. In order to evaluate the accuracy of the model, NeQuick2-VTEC values were compared with the TEC data from four GPS stations in different regions. The results show that the differences between the VTEC values obtained from the NeQuick2 and IGS are less on calm days and at stations in high latitude regions. However, discrepancies increase on geomagnetic and solar active days.